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AAT Bioquest

What are the different types of acids and their applications?

Posted October 10, 2023


Answer

Common types of strong acids include: HCl, H2SO4, HNO3, and HClO3. 

  1. HCl has corrosive properties, with many industrial uses such as steel pickling, food manufacturing, oil well acidizing, ore processing. It is a colorless and highly pungent solution of hydrogen chloride gas, HCl, in water. HCl is the preferred acid in titrations for determining the amount of bases and can also be used to prepare chloride salts. Additionally, it is used for applications such as cleaning pools and concrete. 
  2. H2SO4 also has corrosive properties. It has a wide range of applications such as the production of phosphate fertilizers, dyes, glues, in acidic drain cleaners, as an electrolyte in lead-acid batteries, and in different cleaning agents. Concentrated H2SO4 is also an ideal dehydrating agent, and is able to remove water from other compounds including sugar and other carbohydrates to release heat, carbon, and steam. 
  3. HNO3 is commonly used as a strong oxidizing agent (in liquid-fueled rockets). It is made by reacting nitrogen dioxide with water. Additionally, HNO3 is used to form ammonium nitrates to produce plastics, dyes and fertilizers. It is also used as a chemical doping agent in electrochemistry and making explosives such as TNT. 
  4. HClO3 is produced by mixing chlorine dioxide with water. It is commonly used in bleaching and disinfecting agents, and for the formation of chlorate salts such as sodium and calcium.  

Common types of weak acids include: H3C6H5O7, HCOOH, and HC2H3O2. 

  1. H3C6H5O7 (citric acid) is an organic tricarboxylic acid that occurs naturally in citrus fruits. It is one of the stronger edible acids and the primary use of citric acid is as a flavoring preservative agent in food and beverages, especially sodas. 
  2. HCOOH (formic acid) is the simplest carboxylic acid and occurs naturally in some ants. It has uses in leather tanning, as a decalcifier and cleaning product, in manufacturing salts and esters, and as a chemical reducing agent. 
  3. HC2H3O2 (acetic acid) is the second simplest carboxylic acid and is found in vinegar, typically at a concentration of 5% acetic acid. Acetic acid is used for the preparation of metal acetates, in some printing processes, in making photographic films and textiles, and the production of plastics. Additionally, acetic acid is widely used as a solvent for resins, paints, and lacquers.  
Additional resources

Common Acids and Their Uses

pH Calculator

Weak Acid pH Calculator

Weak Base pH Calculator